Add dramatic lighting with a Lazer track light system. Construct a system to fit your specific need with Lazer by Cooper Lighting. To construct a complete track light, you will need Lazer track, lampholders and connectors, sold separately. Halo Roundback Cylinder lampholders utilize a variety of lamps. Halo Roundback lampholders are compatible with all Halo Power-Trac Systems and are ideal for accent and display lighting applications where high coloring rendering and precise beam control are required.